Can Wisdom Teeth Cavities Be Filled Instead of Extracted?

Wisdom tooth cavities can be treated without extraction; they can be repaired instead?

I have a wisdom tooth that had a cavity filled in the past.
During my recent dental cleaning, I discovered that several previously filled teeth have dark spots underneath.
The dentist said that all of these need to be refilled.
I would like to know if I can continue to fill my wisdom tooth instead of extracting it.
I’ve heard that if the lower wisdom tooth is removed, it’s best to remove the upper one as well for better occlusion.
I don’t want to extract it, but the dentist said that wisdom teeth are useless and should be removed.
Can I request the dentist to just fill it instead of extracting it?
Also, why is it that the areas of the teeth that the dentist said had cavities are still fine? There are no issues on the sides or top, yet cavities seem to be developing in the middle.
How can I prevent cavities? Is it true that fillings need to be redone every 1-2 years? I have a tooth that has undergone pulp treatment; can I use dental floss and a toothbrush on it?
Additionally, sometimes it takes a while to get an appointment.
Does this mean that cavities could worsen? Is it true that a small cavity might require removing a lot of healthy tooth structure to fill it? The dentist mentioned that small cavities between teeth can wait until they get larger before filling.
Is that really the case? I would appreciate your response.
Thank you!

chia2, 20~29 year old female. Ask Date: 2007/03/31

Dr. Zeng Guanghui reply Dentistry

The need for wisdom tooth extraction depends on whether the teeth are properly aligned or if there is impaction (insufficient space for complete eruption).
If the teeth are misaligned or impacted, they can be difficult to clean, leading to recurrent inflammation symptoms (pericoronitis), in which case extraction is recommended.
Additionally, if the crown of the tooth has severe damage that cannot be repaired, extraction is also advised.
Another scenario is when the opposing wisdom tooth has been extracted; the remaining wisdom tooth (either in the maxilla or mandible) may continue to grow without an opposing tooth, potentially causing occlusal interference, which would warrant extraction of the remaining wisdom tooth without an opposing tooth.
After dental restoration, if a shadow appears over time, it may indicate that the filling material has corroded, potentially creating tiny gaps between the filling and the original tooth structure, leading to symptoms of thermal sensitivity.
In such cases, it is recommended to remove the original filling material and replace it.

Reply Date: 2007/03/31

More Info

When it comes to wisdom teeth and cavities, the decision to fill or extract can be complex and highly individualized. Wisdom teeth, or third molars, often present unique challenges due to their location and the potential for complications. If you have a wisdom tooth that has developed cavities, it is essential to consider several factors before deciding whether to fill it or opt for extraction.

Firstly, the primary concern with wisdom teeth is their functionality and the potential for future problems. Many people have their wisdom teeth removed because they can become impacted, leading to pain, infection, or damage to adjacent teeth. If your dentist has suggested extraction, it may be due to the tooth's position, its potential for further decay, or the risk of complications down the line.
Regarding your specific situation, if your wisdom tooth has cavities, it is possible to fill it, provided that the tooth structure is still sound enough to support a filling. However, if the decay is extensive or if the tooth is already compromised, extraction may be the more prudent option. Your dentist's recommendation to extract the wisdom tooth may stem from the belief that it is not worth saving, especially if it does not contribute significantly to your chewing function.

You mentioned that your dentist indicated that wisdom teeth are often not useful and suggested extraction. This is a common perspective in dentistry, as many people do not have enough space in their jaws for these teeth, leading to issues such as crowding or impaction. If your dentist believes that the wisdom tooth is not beneficial and is likely to cause problems in the future, it may be wise to heed their advice.

As for the cavities that have developed in previously filled teeth, it is not uncommon for decay to occur around or beneath fillings. This can happen due to several reasons, including inadequate oral hygiene, the natural wear and tear of dental materials, or the development of new cavities in adjacent areas. To prevent further decay, it is crucial to maintain excellent oral hygiene practices, including regular brushing, flossing, and routine dental check-ups.
In terms of your question about the longevity of fillings, it is true that dental restorations may need to be replaced over time, typically every 5 to 10 years, depending on various factors such as the material used, the location of the filling, and your oral hygiene habits.
Regarding your inquiry about using dental floss and a toothbrush after pulp treatment (root canal), it is generally safe to continue your oral hygiene routine. However, you should follow your dentist's specific recommendations, as they may have particular advice based on your treatment.

Lastly, if you are experiencing delays in scheduling appointments, it is essential to communicate with your dental office about your concerns. Waiting too long to address cavities can lead to more extensive decay, which may require more invasive treatments.
In conclusion, while it is possible to fill a wisdom tooth with cavities, the decision should be made in consultation with your dentist, considering the tooth's condition and potential future complications. Maintaining good oral hygiene and addressing dental issues promptly can help prevent further decay and the need for more extensive treatments. If you have concerns about your wisdom teeth or any other dental issues, don't hesitate to discuss them with your dentist to find the best course of action for your oral health.

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